Which is Better, Rectangular or Spiral Duct?
Choosing Rectangular or Spiral for Your Project
Both spiral duct and rectangular duct are commonly used in HVAC systems, and each has its advantages and disadvantages.
The choice of whether to use rectangular or spiral duct depends on several factors, including the HVAC system’s airflow requirements, space constraints, and the duct’s insulation properties.
At The Cincinnatus Group, our expertise is sourcing the right ductwork for your project, reliably and affordably. Every day we serve sheet metal contractors, project managers and developers, HVAC wholesalers, and more, throughout the nation, with systematic ductwork sales and materials management.
Call us at 878-295-8009 to see if The Cincinnatus Group is the right HVAC duct partner for you!
When to Use Rectangular Duct
In buildings with low ceiling heights and other space restrictions, rectangular duct can be the better option.
Because width and height are two different measurements for rectangular duct, each can be determined separately during fabrication. That’s how the duct can be customized to fit the tightest spaces. This is especially useful when replacing duct in older commercial buildings which may have been built originally without central air in mind, or where replacing older rectangular duct is the only option.
Rectangular duct can be cut or modified more easily on site when problems occur during installation, so it makes a good choice for projects where digital building information models are not available and conflict avoidance planning has not been completed.
What are the Advantages of Spiral Duct?
Spiral duct has several advantages over rectangular duct, including improved airflow, less leakage, quieter operation, and better aesthetics.
In modern design, spiral duct is preferred because of its sleek and modern appearance, which can enhance the look of the building’s interior design. In many of today’s commercial buildings, such as retail spaces, restaurants, and hotels, the HVAC duct and vents are visible near the ceiling, and spiral duct allows for an architecturally pleasing aesthetic.
Spiral duct is often superior in the mechanics of operation too. It allows for:
- Improved Airflow: The circular shape of spiral ductwork helps equalize internal pressure, allowing for more efficient airflow through the HVAC system. This can help to reduce energy consumption over the lifetime of the building.
- Less Leakage: Spiral duct is typically assembled with fewer joins than rectangular duct, which reduces the likelihood of air leaks in spiral to less than 1%. This helps maintain desired temperature and humidity levels in the building and improves indoor air quality.
- Quieter Operation: The smooth interior surface of spiral ducts also helps to reduce noise generated by airflow. This makes spiral ducts a good option for buildings where noise reduction is important, such as hospitals, schools, and offices.
MIRO Roof Products
In 2023, The Cincinnatus Group added roof support products from MIRO Industries as part of our comprehensive approach to sourcing the products you need to get the job done.
MIRO began business in 1982 and today is recognized all over the country as both the longest-standing and longest-lasting solution for rooftop support systems.
MIRO roof support products include:
- Service Access Platforms
- Wind and Seismic Duct & Pipe Supports
- Roller Supports for Rooftop Piping
- Pillow Block & Strut Supports for Small Conduits
- Mechanical Supports for Large and Small Rooftop Equipment
- Non-Penetrating Duct Supports
- Stair Assemblies and Crossovers
- Wind & Seismic Pipe Supports
MIRO believes all rooftop support products should last the entire lifetime of a roof, and so they back up their durable rooftop supports with a 20-year warranty.
Call us today at 878-295-8009 to speak with an HVAC ductwork specialist and roof support specialist about your project or visit our Contact Us page today.
We Offer Comprehensive HVAC Ductwork Solutions
At TCG Duct, we can provide all or part of your HVAC ductwork needs. Our goal is to partner with our customers in ways that make the entire workflow from order to installation a seamless exercise in time and cost savings.
We source and provide the finest in Rectangular Ductwork, Spiral Ductwork, Double Wall Spiral Duct , PCD Ductwork, and Industrial Welded Ductwork.
Your project is priced from a Material List or via a take off from prints you provide, and The Cincinnatus Group works hard to meet your most exacting standards.
In addition to duct, we can source and supply all the fittings, connectors, transitions, and accessories you may need. That makes us an excellent one-stop source for anything related to commercial construction using the best in HVAC ductwork.
Let TCG Duct be your partner in the HVAC Industry as an experienced, high-quality supplier of HVAC duct of all types.
Why Choose The Cincinnatus Group?
At The Cincinnatus Group, our strong work ethic, accountability, and pursuit of excellence defines us, and our unique expertise sets us apart from our competitors.
To learn more about our ductwork supply services or other services we provide, including Contracted Estimating and Take Offs, CAD/BIM/Coordination Drawings, and Project Management Assistance, please call The Cincinnatus Group at 878-295-8009, or visit our Contact Us page today.
We are looking forward to the opportunity to deliver the ductwork and accessories you need, but also to helping you grow your business.
